package com.atguigu.gulimall.product.service.impl;

import com.alibaba.fastjson.TypeReference;
import com.atguigu.common.constant.ProductConstant;
import com.atguigu.common.to.SkuHasStockVO;
import com.atguigu.common.to.SkuReductionTO;
import com.atguigu.common.to.SpuBoundTO;
import com.atguigu.common.to.es.SkuEsModel;
import com.atguigu.common.utils.PageUtils;
import com.atguigu.common.utils.Query;
import com.atguigu.common.utils.R;
import com.atguigu.gulimall.product.dao.SpuInfoDao;
import com.atguigu.gulimall.product.entity.*;
import com.atguigu.gulimall.product.feign.CouponFeignService;
import com.atguigu.gulimall.product.feign.SearchFeignService;
import com.atguigu.gulimall.product.feign.WareFeignService;
import com.atguigu.gulimall.product.service.*;
import com.atguigu.gulimall.product.vo.*;
import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.google.common.collect.Lists;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang.StringUtils;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import org.springframework.util.CollectionUtils;

import java.math.BigDecimal;
import java.util.*;
import java.util.stream.Collectors;


@Service("spuInfoService")
@Slf4j
public class SpuInfoServiceImpl extends ServiceImpl<SpuInfoDao, SpuInfoEntity> implements SpuInfoService {

    @Autowired
    private SpuInfoDescService spuInfoDescService;

    @Autowired
    private SpuImagesService spuImagesService;

    @Autowired
    private AttrService attrService;

    @Autowired
    private ProductAttrValueService productAttrValueService;

    @Autowired
    private SkuInfoService skuInfoService;

    @Autowired
    private SkuImagesService skuImagesService;

    @Autowired
    private SkuSaleAttrValueService skuSaleAttrValueService;

    @Autowired
    private CouponFeignService couponFeignService;

    @Autowired
    private WareFeignService wareFeignService;

    @Autowired
    private SearchFeignService searchFeignService;

    @Autowired
    private BrandService brandService;

    @Autowired
    private CategoryService categoryService;

    @Override
    public PageUtils queryPage(Map<String, Object> params) {
        IPage<SpuInfoEntity> page = this.page(
                new Query<SpuInfoEntity>().getPage(params),
                new QueryWrapper<>()
        );

        return new PageUtils(page);
    }

    /**
     * TODO : 高级部分完善
     *
     * @param vo
     */
    @Transactional
    @Override
    public void saveSpuInfo(SpuSaveVO vo) {
        // 1. 保存spu基本信息:pms_spu_info
        SpuInfoEntity infoEntity = new SpuInfoEntity();
        BeanUtils.copyProperties(vo, infoEntity);
        infoEntity.setCreateTime(new Date());
        infoEntity.setUpdateTime(new Date());
        this.saveBaseSpuInfo(infoEntity);

        // 2. 保存spu的描述图片:pms_spu_info_desc
        List<String> decript = vo.getDecript();
        SpuInfoDescEntity spuInfoDescEntity = new SpuInfoDescEntity();
        spuInfoDescEntity.setSpuId(infoEntity.getId());
        spuInfoDescEntity.setDecript(String.join(",", decript));
        spuInfoDescService.saveSpuInfoDesc(spuInfoDescEntity);

        // 3. 保存spu的图片集: pms_spu_images
        List<String> images = vo.getImages();
        spuImagesService.saveImages(infoEntity.getId(), images);

        // 4. 保存spu的规格参数：pms_product_attr_value
        List<BaseAttrs> baseAttrs = vo.getBaseAttrs();
        List<ProductAttrValueEntity> collect = baseAttrs.stream().map(attr -> {
            ProductAttrValueEntity productAttrValueEntity = new ProductAttrValueEntity();
            productAttrValueEntity.setAttrId(attr.getAttrId());

            AttrEntity attrEntity = attrService.getById(attr.getAttrId());
            if (Objects.nonNull(attrEntity) && StringUtils.isNotBlank(attrEntity.getAttrName())) {
                productAttrValueEntity.setAttrName(attrEntity.getAttrName());
            }
            productAttrValueEntity.setAttrValue(attr.getAttrValues());
            productAttrValueEntity.setSpuId(infoEntity.getId());
            productAttrValueEntity.setQuickShow(attr.getShowDesc());
            return productAttrValueEntity;
        }).collect(Collectors.toList());

        productAttrValueService.saveProductAttr(collect);

        // 5. 保存spu的积分信息： gulimall_sms -> sms_spu_bounds
        Bounds bounds = vo.getBounds();
        SpuBoundTO spuBoundTO = new SpuBoundTO();
        BeanUtils.copyProperties(bounds, spuBoundTO);
        spuBoundTO.setSpuId(infoEntity.getId());
        R r = couponFeignService.saveSpuBound(spuBoundTO);

        if (r.getCode() != 0) {
            log.error("远程保存sku积分信息失败");
        }

        // 6. 保存当前spu对应的所有sku信息
        List<Skus> skus = vo.getSkus();
        if (!CollectionUtils.isEmpty(skus)) {
            skus.forEach(item -> {
                String defaultImg = "";

                for (Images image : item.getImages()) {
                    if (image.getDefaultImg() == 1) {
                        defaultImg = image.getImgUrl();
                    }
                }

                SkuInfoEntity skuInfoEntity = new SkuInfoEntity();
                BeanUtils.copyProperties(item, skuInfoEntity);

                skuInfoEntity.setBrandId(infoEntity.getBrandId());
                skuInfoEntity.setCatalogId(infoEntity.getCatalogId());
                skuInfoEntity.setSaleCount(0L);
                skuInfoEntity.setSpuId(infoEntity.getId());
                skuInfoEntity.setSkuDefaultImg(defaultImg);

                // 6.1）、sku的基本信息； pms_sku_info;
                skuInfoService.saveSkuInfo(skuInfoEntity);

                Long skuId = skuInfoEntity.getSkuId();

                List<Images> images1 = item.getImages();
                List<SkuImagesEntity> skuImagesEntities = images1.stream().map(img -> {
                    SkuImagesEntity skuImagesEntity = new SkuImagesEntity();
                    skuImagesEntity.setSkuId(skuId);
                    skuImagesEntity.setImgUrl(img.getImgUrl());
                    skuImagesEntity.setDefaultImg(img.getDefaultImg());
                    return skuImagesEntity;
                }).filter(entity -> StringUtils.isNotEmpty(entity.getImgUrl()))
                        .collect(Collectors.toList());

                // 6.2）、sku的图片信息： pms_sku_images;
                // TODO 没有图片路径的无需保存
                skuImagesService.saveBatch(skuImagesEntities);

                List<Attr> attr = item.getAttr();
                List<SkuSaleAttrValueEntity> skuSaleAttrValueEntities = attr.stream().map(a -> {
                    SkuSaleAttrValueEntity skuSaleAttrValueEntity = new SkuSaleAttrValueEntity();
                    BeanUtils.copyProperties(a, skuSaleAttrValueEntity);
                    skuSaleAttrValueEntity.setSkuId(skuId);

                    return skuSaleAttrValueEntity;
                }).collect(Collectors.toList());
                // 6.3）、sku的销售属性信息： pms_sku_sale_attr_value
                skuSaleAttrValueService.saveBatch(skuSaleAttrValueEntities);

                // 6.4）、sku的优惠、满减等信息： gulimall_sms -> sms_sku_ladder 、sms_full_reduction、sms_member_price
                SkuReductionTO skuReductionTO = new SkuReductionTO();
                BeanUtils.copyProperties(item, skuReductionTO);
                skuReductionTO.setSkuId(skuId);

                if (skuReductionTO.getFullCount() > 0 || skuReductionTO.getFullPrice().compareTo(new BigDecimal("0")) == 1) {
                    R r1 = couponFeignService.saveSkuReduction(skuReductionTO);
                    if (r1.getCode() != 0) {
                        log.error("远程保存sku优惠信息失败");
                    }
                }
            });
        }

    }

    @Override
    public void saveBaseSpuInfo(SpuInfoEntity infoEntity) {
        this.baseMapper.insert(infoEntity);
    }

    @Override
    public PageUtils queryPageByCondition(Map<String, Object> params) {
        QueryWrapper<SpuInfoEntity> wrapper = new QueryWrapper<>();
         /*status: 1
            key:
            brandId: 1
            catelogId: 225
            */
        String key = (String) params.get("key");
        if (StringUtils.isNotEmpty(key)) {
            wrapper.and((w) -> {
                w.eq("id", key).or().like("spu_name", key);
            });
        }

        String status = (String) params.get("status");
        if (StringUtils.isNotEmpty(status)) {
            wrapper.eq("publish_status", status);
        }
        String brandId = (String) params.get("brandId");
        if (StringUtils.isNotEmpty(brandId) && !"0".equalsIgnoreCase(brandId)) {
            wrapper.eq("brand_id", brandId);
        }
        String catelogId = (String) params.get("catelogId");
        if (StringUtils.isNotEmpty(catelogId) && !"0".equalsIgnoreCase(catelogId)) {
            wrapper.eq("catalog_id", catelogId);
        }

        IPage<SpuInfoEntity> page = this.page(
                new Query<SpuInfoEntity>().getPage(params),
                wrapper
        );

        return new PageUtils(page);
    }

    /**
     * 商品上架
     *
     * @param spuId spuId
     */
    @Override
    public void up(Long spuId) {
        // 组装需要的数据
        // 1. 查出spuId对应的所有sku信息，品牌的名字
        List<SkuInfoEntity> skuInfoEntityList = skuInfoService.getSkusBySpuId(spuId);
        List<Long> skuIdList = skuInfoEntityList.stream().map(SkuInfoEntity::getSkuId).collect(Collectors.toList());

        // TODO 4. 查询当前sku的所有可以被用来检索的规格属性
        List<ProductAttrValueEntity> baseAttrList = productAttrValueService.baseAttrListforspu(spuId);
        List<Long> attrIdList = baseAttrList.stream().map(attr -> attr.getAttrId()).collect(Collectors.toList());
        List<Long> searchAttrList = attrService.selectSearchAttrIds(attrIdList);

        Set<Long> idSet = new HashSet<>(searchAttrList);

        List<SkuEsModel.Attrs> attrs = baseAttrList.stream()
                .filter(item -> idSet.contains(item.getAttrId()))
                .map(item -> {
                    SkuEsModel.Attrs attrs1 = new SkuEsModel.Attrs();
                    BeanUtils.copyProperties(item, attrs1);
                    return attrs1;
                }).collect(Collectors.toList());
        // 2. 封装每个sku的信息

        // 设置库存信息
        // TODO 1. 发送远程调用，库存系统查询是否有库存
        Map<Long, Boolean> stockMap = null;
        try {
            R r = wareFeignService.getSkuHasStock(skuIdList);
            //
            TypeReference<List<SkuHasStockVO>> listTypeReference = new TypeReference<List<SkuHasStockVO>>(){};
            stockMap = r.getData(listTypeReference).stream().collect(Collectors.toMap(SkuHasStockVO::getSkuId, item -> item.getHasStock()));
        } catch (Exception e) {
            log.error("远程调用异常：原因{}", e);
        }

        Map<Long, Boolean> finalStockMap = stockMap;
        List<SkuEsModel> upProducts = skuInfoEntityList.stream()
                .map(sku -> {
                    // 组装数据
                    SkuEsModel esModel = new SkuEsModel();
                    BeanUtils.copyProperties(sku, esModel);

                    // skuPrice,skuImg,
                    esModel.setSkuPrice(sku.getPrice());
                    esModel.setSkuImg(sku.getSkuDefaultImg());
                    // hasStock, hotScore,
                    // TODO 1. 发送远程调用，库存系统查询是否有库存
                    if (finalStockMap == null) {
                        esModel.setHasStock(true);
                    } else {
                        esModel.setHasStock(finalStockMap.get(sku.getSkuId()));
                    }
                    // TODO 2. 热度评分 默认0
                    esModel.setHotScore(0L);

                    // TODO 3. 查询品牌和分类的名字
                    BrandEntity brandEntity = brandService.getById(esModel.getBrandId());
                    esModel.setBrandName(brandEntity.getName());
                    esModel.setBrandImg(brandEntity.getLogo());

                    CategoryEntity categoryEntity = categoryService.getById(esModel.getCatalogId());
                    esModel.setCatalogName(categoryEntity.getName());

                    // 设置检索属性
                    esModel.setAttrs(attrs);
                    return esModel;
                }).collect(Collectors.toList());

        // TODO 5. 将数据发送给es进行保存; gulimall-search
        R r = searchFeignService.productStatusUp(upProducts);
        log.info("searchFeignService ： ==========\n{}", r.toString());
        if (r.getCode() == 0) {
            // 远程调用成功
            // TODO 6 、修改当前spu状态（已上架）
            baseMapper.updateSpuStatus(spuId, ProductConstant.SpuStatusEnum.SPU_UP.getCode());
        } else {
            // 远程调用失败
            // todo 7 重复调用? 接口幂等性 重试机制
            // feign调用流程
            /**
             * 1、 构造请求数据，将对象转为json
             *      RequestTemplate template = buildTemplateFromArgs.create(argv);
             * 2、 发送请求进行执行（执行成功会解码响应数据）
             *      executeAndDecode(template);
             * 3、执行请求会有重试机制
             *      while (true) {
             *          try {
             *              executeAndDecode(template);
             *          } catch () {
             *              try {
             *                  retryer.continueOrPropagate(e);
             *              } catch () {
             *                  throw ex;
             *
             *              }
             *          }
             *      }
             */
        }

    }
}